![]() For example, there is no real flu season in the tropics. Flu viruses are more stable in cold air and the low humidity allows the virus particles to remain in the air, according to Peter Palese, who was the lead author on a key flu study in 2007. ![]() deaths.įlu season typically begins in October, peaks between December and February and lasts well into March although activity can last as late as May. During the 2017-18 season, the CDC estimated there were 61,000 flu-related U.S. Last year, the CDC estimated there were between 36,400 and 61,200 flu-related deaths in the U.S. The 2019-20 flu season follows two straight unusually bad flu seasons. ![]() The CDC estimates that so far this season there have been at least 4.6 million flu illnesses, 39,000 hospitalizations and 2,100 deaths from the flu. Influenza B still causes significant illness in those stricken however, hospitalization and death are less frequent than with Influenza A. ![]()
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